diff --git a/tests/roots_test.py b/tests/roots_test.py
index 8a4720d4..dbb27bbe 100644
--- a/tests/roots_test.py
+++ b/tests/roots_test.py
@@ -15,6 +15,7 @@ def test_root_linear():
     my_root = pe.roots.find_root(my_obs, root_function)
 
     assert np.isclose(my_root.value, value)
+    assert np.isclose(my_root.value, my_root.r_values['t'])
     difference = my_obs - my_root
     assert difference.is_zero()